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SUNITA RANI1,* , R. S. KUNDU1, N. AHLAWAT1, K. M. SANGWAN1, UMAN RANI1, A. KUMAR2
- Department of Physics, Guru Jambheshwar University of Science & Technology, Hissar 125001, India
- School of Physics, University of Hyderabad, Telangana 500059, India
Strontium borate glasses are synthesized by melt-quench technique and amorphous nature is confirmed by X-Ray diffraction pattern. The calculated values of density are found to decrease with TiO2 while molar volume shows the reverse trend. The optical band gap values have been estimated from the fitting of Mott-Davis`s and Hydrogenic Excitonic Model (HEM). The absorption edge has been determined from the extrapolation of optical absorption data which shift towards higher wavelength. Other optical parameters such as refractive index, molar refractivity, oxide ion polarizability, Urbach energy, optical basicity and metallization criterion has been also discussed..
Optical band gap, Oxide ion polarizability, M etallization criteria.
Submitted at: Feb. 8, 2018
Accepted at: Feb. 12, 2019
SUNITA RANI, R. S. KUNDU, N. AHLAWAT, K. M. SANGWAN, UMAN RANI, A. KUMAR, Investigation of optical parameters of titanium substituted strontium borate glasses by Mott Davis’s and hydrogenic excitonic model, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 1-2, pp. 114-118 (2019)
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